diff options
Diffstat (limited to 'tools/tracing/rtla/src/osnoise_hist.c')
| -rw-r--r-- | tools/tracing/rtla/src/osnoise_hist.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c index 7be17d09f7e8..214e2c93fde0 100644 --- a/tools/tracing/rtla/src/osnoise_hist.c +++ b/tools/tracing/rtla/src/osnoise_hist.c @@ -374,6 +374,7 @@ osnoise_print_stats(struct osnoise_hist_params *params, struct osnoise_tool *too { struct osnoise_hist_data *data = tool->data; struct trace_instance *trace = &tool->trace; + int has_samples = 0; int bucket, cpu; int total; @@ -402,11 +403,25 @@ osnoise_print_stats(struct osnoise_hist_params *params, struct osnoise_tool *too continue; } + /* There are samples above the threshold */ + has_samples = 1; trace_seq_printf(trace->seq, "\n"); trace_seq_do_printf(trace->seq); trace_seq_reset(trace->seq); } + /* + * If no samples were recorded, skip calculations, print zeroed statistics + * and return. + */ + if (!has_samples) { + trace_seq_reset(trace->seq); + trace_seq_printf(trace->seq, "over: 0\ncount: 0\nmin: 0\navg: 0\nmax: 0\n"); + trace_seq_do_printf(trace->seq); + trace_seq_reset(trace->seq); + return; + } + if (!params->no_index) trace_seq_printf(trace->seq, "over: "); |